I took a similar approach, though I left the area between the pibeblocks on seperate bases. If they assault a normal unit unit, I put one in between, and if they go against another pikeblock one intermediate is sufficient for a "push".

Stuart – echo the views above on the very high painting standard and the extremely neat solution to levelled pikes. When I get around to working on my 30 year olde Minifig Successor pike phalanxes this will work very well.

Though take care with eBay – I once got a set of some 60 recasts there (seller clamined he had no idea they were): softer metal, softer edges and (weiredly) some 10% smaller then the real Foundries. Not that it matters much for my army, but it still bothers me.